USB 3.1 Type-C Cables

Type-C to USB 3.0 Type-A Female Adapter Cable, 5"/12cm Black

Adapter cable that converts a USB 3.1 Type-C port to a USB 3.0 Type-A Female port
so you can use existing regular USB 3.0/2.0 Type-A devices and accessories on
computer/tablet/smartphones equipped with Type-C port.

Use mouse, keyboard, or other USB Type-A accessory with newer USB Type-C devices.
Or connect external USB hard drive or flash drive, with data transfer speeds of up to 5 Gbit/second.